{"id":1100964,"date":"2025-01-08T15:44:50","date_gmt":"2025-01-08T07:44:50","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1100964.html"},"modified":"2025-01-08T15:44:53","modified_gmt":"2025-01-08T07:44:53","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%85%a5%e4%b8%8d%e7%ad%89%e4%ba%8e%e5%8f%b7-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1100964.html","title":{"rendered":"python\u5982\u4f55\u8f93\u5165\u4e0d\u7b49\u4e8e\u53f7"},"content":{"rendered":"

\"python\u5982\u4f55\u8f93\u5165\u4e0d\u7b49\u4e8e\u53f7\"<\/p>\n

Python\u4e2d\u8f93\u5165\u4e0d\u7b49\u4e8e\u53f7\u7684\u65b9\u6cd5\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528!=<\/code>\u3001\u4f7f\u7528<><\/code>\u3001\u4f7f\u7528is not<\/code>\u3002<\/strong> Python \u662f\u4e00\u79cd\u975e\u5e38\u7075\u6d3b\u4e14\u5f3a\u5927\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u8fdb\u884c\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u7b26\u53f7\u662f\u4e0d\u7b49\u4e8e\u53f7 !=<\/code>\uff0c\u8fd9\u4e2a\u7b26\u53f7\u5728\u5927\u591a\u6570\u73b0\u4ee3\u7f16\u7a0b\u8bed\u8a00\u4e2d\u4e5f\u662f\u901a\u7528\u7684\u3002\u5176\u6b21\uff0cPython 2.x\u7248\u672c\u4e2d\u4e5f\u652f\u6301 <><\/code> \u7b26\u53f7\uff0c\u4f46\u5728 Python 3.x\u7248\u672c\u4e2d\u5df2\u88ab\u5f03\u7528\u3002\u6700\u540e\uff0cis not<\/code> \u64cd\u4f5c\u7b26\u4e3b\u8981\u7528\u4e8e\u5bf9\u8c61\u7684\u8eab\u4efd\u6bd4\u8f83\uff0c\u800c\u4e0d\u662f\u503c\u7684\u6bd4\u8f83\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u8bb2\u89e3\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5b9e\u9645\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528 !=<\/code> \u7b26\u53f7\u8fdb\u884c\u4e0d\u7b49\u4e8e\u64cd\u4f5c<\/h3>\n<\/p>\n

\u5728 Python \u4e2d\uff0c!=<\/code> \u662f\u6700\u5e38\u7528\u7684\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\u3002\u8fd9\u4e2a\u7b26\u53f7\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u503c\u662f\u5426\u4e0d\u76f8\u7b49\uff0c\u5982\u679c\u4e0d\u76f8\u7b49\u5219\u8fd4\u56de True<\/code>\uff0c\u5426\u5219\u8fd4\u56de False<\/code>\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n

a = 5<\/p>\n
b = 10<\/p>\n
if a != b:<\/p>\n
    print("a \u548c b \u4e0d\u76f8\u7b49")<\/p>\n
else:<\/p>\n
    print("a \u548c b \u76f8\u7b49")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ca \u7684\u503c\u662f 5\uff0cb \u7684\u503c\u662f 10\uff0c\u7531\u4e8e a \u548c b \u7684\u503c\u4e0d\u76f8\u7b49\uff0c\u56e0\u6b64\u8f93\u51fa\u5c06\u4f1a\u662f "a \u548c b \u4e0d\u76f8\u7b49"\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528 <><\/code> \u7b26\u53f7\u8fdb\u884c\u4e0d\u7b49\u4e8e\u64cd\u4f5c<\/h3>\n<\/p>\n
\u5728 Python 2.x \u7248\u672c\u4e2d\uff0c<><\/code> \u4e5f\u53ef\u4ee5\u7528\u6765\u8868\u793a\u4e0d\u7b49\u4e8e\u3002\u7136\u800c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e2a\u7b26\u53f7\u5728 Python 3.x \u7248\u672c\u4e2d\u5df2\u7ecf\u88ab\u5f03\u7528\uff0c\u56e0\u6b64\u4e0d\u63a8\u8350\u5728\u65b0\u7684\u9879\u76ee\u4e2d\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
a = 5<\/p>\n
b = 10<\/p>\n
if a <> b:<\/p>\n
    print("a \u548c b \u4e0d\u76f8\u7b49")<\/p>\n
else:<\/p>\n
    print("a \u548c b \u76f8\u7b49")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5982\u679c\u60a8\u4ecd\u7136\u5728\u4f7f\u7528 Python 2.x \u7248\u672c\uff0c\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4f1a\u5de5\u4f5c\u6b63\u5e38\uff0c\u4f46\u8bf7\u8003\u8651\u5347\u7ea7\u5230 Python 3.x\uff0c\u5e76\u4f7f\u7528 !=<\/code> \u64cd\u4f5c\u7b26\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528 is not<\/code> \u64cd\u4f5c\u7b26\u8fdb\u884c\u4e0d\u7b49\u4e8e\u64cd\u4f5c<\/h3>\n<\/p>\n
is not<\/code> \u64cd\u4f5c\u7b26\u4e3b\u8981\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684\u8eab\u4efd\uff0c\u800c\u4e0d\u662f\u5b83\u4eec\u7684\u503c\u3002\u5b83\u7528\u6765\u5224\u65ad\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u4e0d\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n<\/p>\n
a = [1, 2, 3]<\/p>\n
b = [1, 2, 3]<\/p>\n
c = a<\/p>\n
if a is not b:<\/p>\n
    print("a \u548c b \u4e0d\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61")<\/p>\n
if a is not c:<\/p>\n
    print("a \u548c c \u4e0d\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61")<\/p>\n
else:<\/p>\n
    print("a \u548c c \u662f\u540c\u4e00\u4e2a\u5bf9\u8c61")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ca \u548c b \u6709\u76f8\u540c\u7684\u503c\u4f46\u5b83\u4eec\u662f\u4e0d\u540c\u7684\u5bf9\u8c61\uff0c\u56e0\u6b64 a is not b<\/code> \u5c06\u8fd4\u56de True<\/code>\u3002\u800c c \u662f\u76f4\u63a5\u5f15\u7528 a \u7684\uff0c\u56e0\u6b64 a is not c<\/code> \u5c06\u8fd4\u56de False<\/code>\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u4e0d\u7b49\u4e8e\u64cd\u4f5c<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u7684\u9879\u76ee\u4e2d\uff0c\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u573a\u666f\uff0c\u6bd4\u5982\u6570\u636e\u8fc7\u6ee4\u3001\u6761\u4ef6\u5224\u65ad\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n
1. \u6570\u636e\u8fc7\u6ee4\uff1a<\/h4>\n<\/p>\n
\u5728\u6570\u636e\u5904\u7406\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u8fc7\u6ee4\u6389\u4e00\u4e9b\u4e0d\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u3002\u6bd4\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u4eba\u5e74\u9f84\u7684\u5217\u8868\uff0c\u6211\u4eec\u5e0c\u671b\u627e\u51fa\u6240\u6709\u4e0d\u7b49\u4e8e 18 \u5c81\u7684\u5e74\u9f84\u3002<\/p>\n<\/p>\n
ages = [15, 18, 20, 22, 18, 30, 18]<\/p>\n
filtered_ages = [age for age in ages if age != 18]<\/p>\n
print(filtered_ages)  # \u8f93\u51fa: [15, 20, 22, 30]<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u6761\u4ef6\u5224\u65ad\uff1a<\/h4>\n<\/p>\n
\u5728\u7f16\u5199\u7a0b\u5e8f\u903b\u8f91\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u6839\u636e\u67d0\u4e9b\u6761\u4ef6\u6765\u6267\u884c\u4e0d\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57: ")<\/p>\n
if user_input != "42":<\/p>\n
    print("\u4f60\u6ca1\u6709\u8f93\u5165 42")<\/p>\n
else:<\/p>\n
    print("\u4f60\u8f93\u5165\u4e86 42")<\/p>\n
<\/code><\/pre>\n<\/p>\n
3. \u5faa\u73af\u63a7\u5236\uff1a<\/h4>\n<\/p>\n
\u5728\u5faa\u73af\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\u6765\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c\u6761\u4ef6\u3002<\/p>\n<\/p>\n
count = 0<\/p>\n
while count != 10:<\/p>\n
    print(f"\u5f53\u524d\u8ba1\u6570: {count}")<\/p>\n
    count += 1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5faa\u73af\u5c06\u4f1a\u6301\u7eed\u6267\u884c\uff0c\u76f4\u5230 count \u7684\u503c\u7b49\u4e8e 10\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
Python \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u8fdb\u884c\u4e0d\u7b49\u4e8e\u64cd\u4f5c\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u7b26\u53f7\u662f !=<\/code>\u3002\u6b64\u5916\uff0cPython 2.x \u7248\u672c\u8fd8\u652f\u6301 <><\/code> \u7b26\u53f7\uff0c\u4f46\u4e0d\u63a8\u8350\u5728\u65b0\u7684\u9879\u76ee\u4e2d\u4f7f\u7528\u3002is not<\/code> \u64cd\u4f5c\u7b26\u4e3b\u8981\u7528\u4e8e\u5bf9\u8c61\u7684\u8eab\u4efd\u6bd4\u8f83\uff0c\u800c\u4e0d\u662f\u503c\u7684\u6bd4\u8f83\u3002\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6570\u636e\u8fc7\u6ee4\u3001\u6761\u4ef6\u5224\u65ad\u548c\u5faa\u73af\u63a7\u5236\u7b49\u573a\u666f\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u7406\u89e3\u548c\u638c\u63e1\u8fd9\u4e9b\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u7f16\u5199 Python \u4ee3\u7801\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u5728 Python \u7f16\u7a0b\u4e2d\u7684\u4e0d\u7b49\u4e8e\u64cd\u4f5c\u7b26\u4f7f\u7528\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u4e0d\u7b49\u4e8e\u53f7\uff1f<\/strong>
\u5728Python\u7f16\u7a0b\u4e2d\uff0c\u4e0d\u7b49\u4e8e\u53f7\u7528\u7b26\u53f7\u201c!=\u201d\u8868\u793a\u3002\u8fd9\u662f\u4e00\u4e2a\u6bd4\u8f83\u8fd0\u7b97\u7b26\uff0c\u80fd\u591f\u7528\u6765\u5224\u65ad\u4e24\u4e2a\u503c\u662f\u5426\u4e0d\u76f8\u7b49\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u6765\u68c0\u67e5\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u662f\u5426\u4e0d\u540c\uff1a<\/p>\n
a = 5\nb = 3\nif a != b:\n    print("a\u548cb\u4e0d\u76f8\u7b49")\n<\/code><\/pre>\n
\u4e0d\u7b49\u4e8e\u53f7\u5728\u6761\u4ef6\u8bed\u53e5\u4e2d\u7684\u5e94\u7528\u662f\u4ec0\u4e48\uff1f<\/strong>
\u4e0d\u7b49\u4e8e\u53f7\u5728\u6761\u4ef6\u8bed\u53e5\u4e2d\u8d77\u5230\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u5c24\u5176\u662f\u5728\u63a7\u5236\u7a0b\u5e8f\u6d41\u7a0b\u65f6\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4e0d\u7b49\u4e8e\u53f7\u6765\u8fc7\u6ee4\u6389\u67d0\u4e9b\u7279\u5b9a\u6761\u4ef6\u7684\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u5728\u5faa\u73af\u4e2d\u4f7f\u7528\u4e0d\u7b49\u4e8e\u53f7\uff1a<\/p>\n
for number in range(1, 10):\n    if number != 5:\n        print(number)\n<\/code><\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6240\u6709\u4e0d\u7b49\u4e8e5\u7684\u6570\u5b57\u90fd\u4f1a\u88ab\u6253\u5370\u51fa\u6765\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u4e0d\u7b49\u4e8e\u7684\u590d\u6742\u903b\u8f91\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u7ed3\u5408\u903b\u8f91\u8fd0\u7b97\u7b26\uff08\u5982and\u3001or\uff09\u4e0e\u4e0d\u7b49\u4e8e\u53f7\u6765\u6784\u5efa\u66f4\u590d\u6742\u7684\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5728\u67d0\u4e2a\u6761\u4ef6\u4e0b\u68c0\u67e5\u591a\u4e2a\u53d8\u91cf\u7684\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
x = 10\ny = 20\nz = 30\n\nif x != y and y != z:\n    print("x\u4e0ey\u548cy\u4e0ez\u90fd\u4e0d\u76f8\u7b49")\n<\/code><\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u786e\u4fdd\u4e86x\u4e0ey\u4e0d\u76f8\u7b49\uff0c\u540c\u65f6y\u4e0ez\u4e5f\u4e0d\u76f8\u7b49\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u66f4\u590d\u6742\u7684\u903b\u8f91\u5224\u65ad\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u4e2d\u8f93\u5165\u4e0d\u7b49\u4e8e\u53f7\u7684\u65b9\u6cd5\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528!=\u3001\u4f7f\u7528<>\u3001\u4f7f\u7528is not\u3002 Python […]","protected":false},"author":3,"featured_media":1100970,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1100964"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1100964"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1100964\/revisions"}],"predecessor-version":[{"id":1100973,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1100964\/revisions\/1100973"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1100970"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1100964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1100964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1100964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}